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Finding the Fourth Proportional to 210,664.60, 316,040.10 and 70,523.80

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Solution

The fourth proportional to 210,664.60, 316,040.10 and 70,523.80 is: 105,800.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,664.60 : 316,040.10 = 70,523.80 : x
  2. Step 2: Convert to fraction form
    210,664.60/316,040.10 = 70,523.80/x
  3. Step 3: Cross multiply
    210,664.60x = 316,040.10 × 70,523.80
  4. Step 4: Simplify right side
    210,664.60x = 22,288,348,804.38
  5. Step 5: Solve for x
    x = 22,288,348,804.38/210,664.60
  6. Step 6: Final answer
    x = 105,800.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.